Photographic film cassette having a film anchor

Details Photographic film cassette having a film anchor Photographic film cassette having a film anchor

1991-09-13

1994-11-01

Stodola, Daniel P.

Winding, tensioning, or guiding

Coil holder or support

With material end retainer

2425841, B65H 7528

Patent

active

053601831

ABSTRACT:
A photographic film cassette has a slit formed in a core of the spool. An engaging member having a spring force is disposed within the slit. The engaging member engages with an engagement hole formed in the trailer of a photographic film, so as to prevent the film trailer from being removed from the spool. In pulling the entirety of an exposed film out of the cassette so as to develop it, the engaging member is moved to an engaging release position to disengage it from the engagement hole.

REFERENCES:
patent: 2948487 (1960-08-01), Locklin
patent: 3233842 (1966-02-01), Grafton
patent: 3347486 (1967-10-01), Martin
patent: 3387800 (1968-06-01), Hoag
patent: 4852821 (1989-08-01), Harris et al.
patent: 4955555 (1990-09-01), Person et al.

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